View this product description in Norwegian.

Features:
 12" Bass/mid-range driver providing 97dB sensitivity and 250Wrms (AES standard)
continuous power handling
 2.5" high-temperature copper voice coil wound on polyimide for increased reliability
 Features compact and lightweight neodymium magnet assembly
 Smart use of venting and specially designed heatsink for reduced thermal
compression
 Effective flux management enables increased sensitivity
General Specifications:

• Nominal diameter: 305mm/12in
• Power rating: 250Wrms
• Nominal impedance: 8 Ohm
• Sensitivity: 97dB
• Frequency range: 50-4000Hz
• Voice coil diameter: 64mm/2.5in
• Chassis type: Pressed steel
• Magnet type: Neodymium
• Coil materia:l Round copper
• Former material: Polyimide
• Cone material: Kevlar loaded paper
• Surround material: Cloth-sealed
• Suspension: Single
• Xmax: 2.5mm/0.099in
• Gap depth: 8mm/0.32in
• Voice coil winding width: 13mm/0.51in

Small Signal Parameters:

• D: 0.26m/10.24in
• Fs: 60.5Hz
• Mms: 51.15g/1.81oz
• Mmd: 44.23g/1.74oz
• Qms: 3.03
• Qes: 0.37
• Qts:  0.33
• Re: 5.18 Ohm
• Vas: 53.92lt/1.90ft3
• BI: 16.48Tm
• Cms: 0.14mm/N
• Rms: 6.43kg/s
• Le: (at 1kHz) 0.63mH

Mounting Information:

• Overall Diameter: 309mm/12.17in
• Overall depth: 132mm/5.20in
• Cut out diameter: 283mm/11.14in
• Mounting slot dimensions: Ø 7.9mm/0.31in
• Number of mounting slots: 4
• Mounting slot PCD: 297mm/11.69in
• Unit weight: 2.0kg/4.4lb